We report the extension of broadband degenerate OPO operation further into mid-infrared. A
femtosecond thulium fiber laser with output centered at 2050 nm synchronously pumps a …

We review a novel class of femtosecond Cr 2+-doped ZnSe and ZnS lasers, which operates
in a very important for applications wavelength range between 2 and 3.5 μm and which …

We report the ultrashort-pulse Cr: ZnS laser mode-locked by graphene-based saturable
absorber mirror. Using the combination of bulk material and a chirped mirror, we …

Broadband mid-IR output suitable for producing 1000-nm-wide frequency combs centered at
4.9? μm was achieved in a degenerate subharmonic optical parametric oscillator (OPO) …

We report the soft-aperture Kerr-lens mode-locked Cr: ZnS laser, generating 550 mW of 69
fs nearly transform-limited pulses at 2.39 μm wavelength. The pulse energy reached 3.8 nJ …

Optical solitons have long been of interest both from a fundamental perspective and
because of their application potential. Both cubic (Kerr) and quadratic nonlinearities can …

Cr-doped ZnS and ZnSe are excellent gain mediums for high power and broadband
ultrashort pulse generation in the 2–wavelength range. SESAM modelocked Cr: ZnS …

Here we report the demonstration of a spectral peaking phenomenon in a fiber laser
oscillator. An HCN gas cell was inserted in an ultrashort-pulse Er-doped fiber laser with …

Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide,
formaldehyde, acetylene, and ethylene is performed in the spectral range 2.5–5 μm using …

The atmospheric dispersion in the mid-infrared transparency windows presents an important
albeit often neglected factor when developing ultrashort-pulsed lasers. We show that it can …